After drilling a well, when can you use water? Pumping a new well for water. Step-by-step process for pumping up a well

Those who have not encountered well drilling before may think that the process ends with the installation of pipes, but that’s not the case! In addition to installing and connecting to the water supply system, you also need to pump the well, because at first only dirty water can be pumped out of it. What is this procedure?

Why is pumping needed?

Let's give clear example. If you dig small hole and pour water into it, what will it resemble? Obviously not a pool with drinking water! Even after the water has settled, it will still not become clean, and silt and other debris will be visible at the bottom.

Now imagine what the bottom of the well is like after drilling, especially if the reverse flushing method was used, during which a clay solution is fed into the well to strengthen its walls. Would you like to drink this water? Of course not!

How to upgrade?

Let's start with the question: Was the well built by a company, or by shabatniks? Depends on the answer further actions, since in the first case this service is included in the terms of the contract (if, out of ignorance, you did not refuse it). This is done using a powerful submersible centrifugal pump, capable of pumping from 3 to 6 m³/h of water containing a large number of impurities. Such a pump sinks almost to the bottom of the well, and with a powerful suction flow it will pull out all the debris.

If you “save” on pumping by hiring specialists whose cost of work is less than that of professional drillers, but at the same time they are not responsible for anything, then you will have to pump the well yourself. To do this, you will need to purchase an inexpensive domestically produced pump.

Don’t rush to say that you don’t need this, since you already have an imported one, specially purchased for these purposes. What kind of water will we pump out? Almost a swamp with sand and various rubbish! Therefore, if you rush to install your expensive branded bleeder pump, then get ready to say goodbye to it, since it is simply not designed for such work.

Let's return to the inexpensive domestic pump, which may not even “survive” until the end of flushing:

1. Attach a stainless steel cable to it and lower it to the bottom of the well.
2. Then lift it 30–40 centimeters and secure it in this position. Now you can turn it on. When you see how the water turns out, you will be glad that you didn’t install an expensive pump.
3. In order for your “Baby” (or “Stream”) to serve as long as possible, you need to take it out from time to time and give it the opportunity to clean itself clean water, and then lower it back into the well.

The pump should not be in one position. It needs to be slowly raised and lowered by 4–6 cm, without making sudden movements. This is necessary so that the sand from the plug rises in parts and does not clog the hose.

The pump must be gradually lowered lower and lower in order to clean the bottom of the well from all unnecessary things. If water suddenly stops flowing from the hose, then most likely the pump has become sucked in. In this case, it must be immediately disconnected from the power supply and pulled out, and this would not have happened without the attached cable, since the silt firmly holds everything that gets into it.

How much to pump?

A relatively shallow well, in which the aquifer consists of sand or limestone, can be pumped in a day. If the well is deep and the aquifer is sandstone, then pumping can last a month! If this is the case for you, then do not rush to think that this well is a failure. It will gradually go pure water, and such a well can be used for up to 50 years.

Mistakes to Avoid

Ignorance of some seemingly basic issues can make life very difficult. Let's look at some of them.

• The pump is located near the surface of the water. In this case, it will pump out only water, and clay deposits and sand will remain in the well, constantly polluting the water, or completely block its access.
• The pump is located at the very bottom. In this case, it will very quickly fail, becoming clogged with suspension, or it will simply “burrow” into the silt.
• The cable is not attached to the pump. In this case, it will become impossible to pull it out if it gets stuck in the ground.
• The pumped water is discharged near the well. In this case, the water will again flow into the well, washing away its walls reinforced with clay. Such pumping can last indefinitely.

How to deal with siltation

It is important to remember that the well needs preventive maintenance. If you notice that the water level decreases while the pump is running, you need to turn on the pump every day for 2-3 hours. If this did not help, and the water began to flow poorly, it means that it needs to be washed to remove the silt that has formed in it. To do this, lower a hose into the well and supply clean water through it under pressure. This must be done until all bottom sediments rise up and come out of the well. After this, you need to pump the well again. This is the only way the water will always be clean.

Video

Drilling a well is a rather labor-intensive and financially expensive process. To provide a home or country cottage area water, you will have to work hard first.

However, all the work will go down the drain if the source produces a cloudy and dirty liquid.

Well pumping is an action associated with long-term pumping of dirty liquid mixed with silt from the wellbore casing pipe.

During drilling operations, the upper and inner layers of the soil are disturbed. There are aquifer veins in various layers. These can be perched or rainwater. The source gradually fills with turbid liquid containing loam, sand and other sediments.

Dirt and other contents can only be removed by lifting it up the shaft. Leveling up in in this case carries a cleansing mission.

The need for pumping is due to the need for drinking and clean water. If you start using a newly drilled mine or one that has been idle for a long time, you may experience unpleasant consequences. The first water cannot be used.

The liquid underground is constantly moving, carrying various components, such as:

• sand,
• loam,
• small clay particles,
• sludge and other substances.

When drilling, the formation is broken, in which a cavity is formed, and water and dirt rush into it. The filter around the casing and in the borehole itself cannot completely cope with the cleaning problem.

Equipment

The main tools are a deep submersible unit and pumping station. Right choice device depends on several factors:

1. The material used for making pipes used as casing. Previously, the mine shaft was only metal. Now polyethylene has replaced it, so pipes began to be made from plastic or polypropylene components. The benefits of using such material are obvious. Firstly, the lightness and strength of the product. Secondly, relative cheapness compared to metal. Thirdly - durability.
2. Depth of the drilled shaft. The stronger the equipment, the longer the distance the device can lift liquid. When choosing a tool, you need to find out what the depth of the shaft is and the approximate column of water in it.
3. Composition of the liquid. Upon completion last stages When drilling and laying casing, you need to make sure that there is water in it. Of course, the liquid will be cloudy and contaminated. This will become visible as soon as the last meters are covered and rises to the surface. It is important to find out how dirty it is and what percentage of turbidity, this will help prevent damage to the pumping equipment.

There are two types of units: vibrating and centrifugal.

The first operates from an electromagnetic pulse, which alternately opens the water inlet and outlet valves, thereby creating voltage in the intake chamber. As a rule, the vibration method of operation is chosen by manufacturers of low-power devices.

They are immersed into the trunk to a shallow depth. Such a unit has low power, but also low cost. This is not to say that such equipment is not suitable for pumping a well. On the contrary, if you do the work yourself, you should choose a vibrating submersible pump.

Submersible pump “Baby”

It may seem that the vibration effect of equipment with solenoid valve very small. When the device is turned on on a surface, it is easy to hold in your hand. But it should be remembered that a column of water up to five meters high at a depth of up to 50 meters creates a so-called vibration echo. Waves from operating equipment constantly hit the walls of the casing. Which can lead to displacement of the joints or the formation of cracks in the barrel.

The casing, made of metal or thick-walled polyethylene, with pipes welded together, can easily withstand the movement of water masses at the bottom. The same cannot be said about plastic screw pipes.

Important: The vibrating device cannot be used to pump a well with plastic casing.

Centrifugal devices have a structure and operating principle that is very different from vibration devices.

The main element is the fluid supply motor located in a sealed housing. Electricity is supplied and the motor spins the augers of the impeller at the bottom of the device. As a result, liquid is taken into the chamber and subsequently transported to the surface due to constantly pumped pressure. Such units have virtually no vibration. And if there is, then it is insignificant and does not cause harm to the mine shaft.

A submersible device with a centrifugal impeller is designed to lift liquid to a height of 20 meters and above. It all depends on the productive capacity of the equipment. The peculiarity of the structure allows you to pump out not only clean water, but also with admixtures of thick fractions (clay, sand). Its price is quite high, but the performance matches.

How much to pump

A positive outcome from pumping the mine depends on the duration of operation of the pumping equipment. Rocking the well should begin immediately after installing the last section of casing. In time it can be from four hours to two days. There have been cases of pumps running continuously for a week. The time depends on many reasons:

• mine depth;
• water column height;
• the soil in which the trunk and aquifer are located;
• the conditions under which the work was carried out.

Instructions

Tools and equipment for work:

• Durable steel cable.
• Deep well pump.
• Long hose.
• Container with water.

Errors

1. Often chosen incorrectly pump equipment for pumping up the well. Violation of the principles for selecting devices is fraught with additional financial costs for new equipment.
2. The pump was running too long, causing the aquifer to become depleted or the holes in the shaft to become silted.
3. The pumping was not completed completely, that is, clean water did not come out of the pump, but it was turned off. In this case, silt and clay will settle to the bottom and the pump will remain trapped.

Rocking up immediately after drilling with your own hands

First stage. The pump may get stuck in clay or silt deposits at the bottom of the well; in order to lower and, most importantly, lift the device up, you need a strong but flexible cable. It should be chosen with the maximum margin of safety. We tie the pump to the cable using several control ties or knots. We tie a cable and a hose to it with a slight slack.

Second phase. We load the equipment. To correctly position the pump in the shaft, you must first completely lower it to the bottom, and then, measuring 30–40 centimeters on the cable, lift it back up. By choosing this height, you can count on the device not getting clogged, but also pumping will proceed efficiently.

Third stage. The discharge hose must be directed away from the source. This is necessary to prevent dirty liquid from getting back. In addition, it should be taken into account that it will be mixed with silt or sand. It is better to organize a sump at all. Put it in a trough fine mesh into which to install the hose. The water will hit and pass through the mesh, but the clay will remain in the filter.

Fourth stage. We turn on the unit into the network. In a moment the water will flow. Experts recommend not leaving the device alone. Every 15–20 minutes, the equipment is pulled up by the cable and smoothly lowered back. This must be done very carefully and smoothly. This method will allow the pump not to silt, and in case of jamming, quickly detect the problem.

Fifth stage. We take out the unit for washing. There is silt and clay mixed with water, which is why the valve will constantly clog. This moment cannot be missed. As soon as the liquid stops flowing, or the hose spits jerkily, it’s time to take out the device. Washing takes place in a container with clean water. After cleaning, the equipment is sunk to the bottom again.

Important: the layer of sludge at the bottom is constantly changing, and after removing the pump for flushing, the reverse immersion occurs according to the same algorithm.

How to pump up an old mine drilled into sand or clay

The above-mentioned 5 stages also apply to sources that have been in operation for a long time. Except for a few rules:

• The old well must be cleaned before pumping. There are several proven methods for this. A bailer is a special device for removing silty and sand deposits in the trunk.
• High pressure water rinsing.

As in the old spring, a large amount of sediment collects in the casing in the form of dense, thick sand or clay (in the case of clay, also viscous. To pump the mine shaft, all sediments need to be broken up and mixed with water. It is unlikely that there is such a large mixer for agitation of the suspension. Reverse injection is used here.

Under high pressure, a significant volume of water is discharged into the barrel, it breaks the plug and stirs it. The pump then draws the slurry to the surface. The procedure is repeated several times.

Important: After each pumping and pumping of water, you need to take a short break of 20–30 minutes.

A motor pump is used to lift heavy silt or sandy deposits with water to the surface. This is a powerful pumping equipment that works on the surface, without immersion in the shaft. The device is considered a vacuum and to start working you will have to pour water into a special plug. The pump easily handles thick slurry. The depth of such equipment is limited. No more than 30 meters.

How to pump up a source after winter

In winter, the water in the mine shaft stagnated and penetrated into the aquifer. As a result, there was no fluid circulation. In addition, melt water certainly got inside the pipe. Before using it for economic purposes, the well is also pumped with a deep-well pump.

How to extend the service life

1. Do not leave the source inoperative for a long period of time.
2. After each conservation and pump the shaft.
3. Do not allow foreign objects to enter the barrel.
4. Calculate in advance the expected debit of the source and select suitable pumping equipment.

After completion of drilling and installation of the casing, the owner of an equipped water source will be faced with the following question: how to pump the well? That is, how to remove from the mine the remains of silt, sand suspension and dirty water that has accumulated in the well during drilling or appeared during the installation of casing pipes.

Moreover, due to the fairly large volume of pollution and the inaccessibility of waste deposits, cleaning a well after drilling is a fairly complex operation, implemented using special technologies.

However, these technologies, despite some specificity, are still quite accessible for mastering and using in a do-it-yourself format. And in this article we will look at the build-up process, which can be implemented on your own.

An aquifer is a far cry from the clean stream of water that comes out of your kitchen faucet. IN natural environment the aquifer is a sandy-clayey suspension compressed between a clay lens and sandy loam. It is from this that we extract water, purifying this mess using mechanical filters.

But mesh filters cannot deal with the smallest particles - silt. In addition, during the construction process, some of the highly concentrated sand suspension will penetrate into the well, clogging the filters from the inside.

As a result, the owner of a newly equipped source is forced to pump out this mixture from the bottom, thereby increasing the performance of the filters and the quality of the water. That is, he needs to pump up a new well, creating conditions for successful operation of the source in the near future.

At the same time, during the “swinging” process, silt and sand are washed out not only from the pipe, but also from the layer closest to the outer boundaries of the casing. Therefore, a properly “boosted” well is surrounded not by a turbid suspension, but by a layer of fairly clean water. But such a result requires some effort.

How to properly pump a well: an overview of the process

Technically, “pumping up” looks like regular pumping of water from a well. That is, we immerse the pump in the casing pipe and begin to pump out water along with silt and sand-clay suspension.

But the apparent simplicity of such technology is deceptive.

After all, to successfully complete this procedure you need to know:

• Firstly, how long to pump the well (in time, without breaks).
• Secondly, which pump to do this with (selected according to the performance of the unit).
• Thirdly, how to organize this process (where to fix the pump, when to start pumping, and so on).

Duration of well build-up

You need to pump continuously until perfectly clean water “comes out” from the outlet pipe of the pump. After all, mesh filters allow only small particles to pass through, and coarse sand settles with outside, forming an additional filter layer.

Thus, the duration of pumping depends on the type of soil, the throughput diameter of the casing pipe and the depth of the well bottom. But even under almost identical conditions, one well will pump much longer than the other. After all, everything depends on the quality of the soil near the filter itself.

Eventually, average duration pumping takes 10-12 hours, but the most polluted mines, located in clayey or chalky soils, pump for whole days.

What pump should I use to pump a well?

Of course, the cheapest, submersible, centrifugal type. After all, it will have to be disposed of or put aside until the next buildup. Because it is no longer possible to use such a pump, clogged with silt and sand. And, yes, vibration pumps are categorically not recommended for swinging - they simply cannot withstand such a load.

Well, it is strictly not recommended to use the main pump, which was purchased as the main pumping device that provides pressure in the home pipeline.

It is introduced into the well only after pumping. And it pumps only practically clean water.

Organizational matters

We have already decided how to pump the well after drilling.

Now let's look at how to do this:

• The pumping process starts after the installation of the last bend of the casing pipe is completed.
• The main tool is a centrifugal pump, submersible type.
• The immersion level is 70-80 centimeters from the bottom of the well, approximately at the end of the gravel filter.
• The pump operation mode is intermittent, with frequent removal from the well for flushing and cleaning.

Pump power is the maximum possible (taking into account the cost). Indeed, to complete the pumping process, in some cases, you have to pump up to 500 cubic meters liquid suspension.

Well pumping: overview of common mistakes

The well pumping procedure may fail due to the following organizational errors:

• Due to too low immersion of the pump, as a result of which the device becomes clogged with sludge within minutes. And in the most difficult cases the pump will be sucked into the quicksand irrevocably.
• Due to too high a suspension, as a result of which only the upper part of the submerged section of the casing pipe will swing, and silt deposits will remain at the bottom of the source. As a result, after a couple of months, you will need to repeat the buildup.
• Due to ill-considered discharge of pumped water discharged near a well or well. As a result, water will seep back into the pipe, penetrating through the joint cracks and eroding the soil surrounding the well.

Therefore, the pump must be hung correctly (neither high nor low), and the water must be drained as far as possible from the head of the well. Otherwise, all the efforts and funds spent on the build-up will be in vain.

Fighting silt and quicksand

It doesn’t matter how long and how many times you pump the well, silt will still appear in the mine. After all, the mesh filters placed on the intake holes at the end of the casing pipe are simply not designed for such a small “caliber” of polluting particles.

Quicksand is water-saturated sand or sandy loam

As a result, the well owner must allocate time for preventive work carried out immediately after the flood subsides (seasonal increase in the level groundwater). After all, silt plugs are formed during an unexpected increase in pressure in the aquifers of the soil.

Moreover, there are two ways to deal with traffic jams, namely:

• If the moment has not yet been missed, and there is no plug in the well yet, then you just need to increase the intensity of operation, pumping out water not as needed, but for 2-3 hours at a time. As a result of such an overload, coarse sand will be washed around the filter bend of the casing pipe, and silt deposits will be removed from the mine until the next flood. But after such harsh operation, it is necessary to inspect and repair the pump.
• If the moment is missed and a plug forms in the well, it will have to be washed away with a stream of water supplied to the bottom of the well under pressure. Moreover, blurring requires a special injection pump, a hose the length of which is equal to the depth of the well, and a hydraulic nozzle. After washing out, the silty suspension is simply pumped out of the well without any residue.

As you can see: both technologies do not require exorbitant efforts, and most of the work related to well maintenance is carried out remotely. Therefore, just don’t be lazy, maintain the well at the required intervals, and enjoy clean water all year round.

How to pump a well from clay worries many owners of their plots. This process requires sufficient qualifications and special knowledge, which entails the use of the experience of drilling specialists. This article gives brief information about carrying out work on your own.

How a well is constructed and what it is

A well is a needle well, represents this well small design. Its diameter is at least 40 cm, and its depth can be 20 m or more.

Note. Wells that are located at depth are called artesian. They are located from 50 m.

Let's consider the types of structures:

• Abyssinian is a tube well. It is being constructed to a depth of 12 meters. 8-10 m is considered the most optimal.
• This type of well differs from a regular one in that no perched water penetrates into the water source, which clogs the water and makes it unsuitable for use. There may be a depth of 15-35 m.
• It all depends on what level the aquifer is at, what the well looks like in the shape of a pipe, and to ensure that its walls do not crumble interior decoration using asbestos or plastic pipes.
• Quite often, clay or a special solution based on it is used in finishing. This makes it possible to use the well for a long time.
• At the end of the pipe, which is used for arrangement, there is a perforation, which is wrapped in stainless steel metal mesh. Such a filter is installed to prevent large sand particles from entering the water. An automatic filter unit can handle minor blockages.
• This type of well is suitable for personal use in the country or any country house. big enough.

Advice. Quite often, wells can become silted. If the well is not used regularly, it will serve uninterruptedly for 5 years. If the well is used regularly, its service life increases to 15 years.

• Over time, it silts up and it is necessary to clean and rinse it, see photo.

• is a deeper structure. Its depth can reach 200 m. Such deep wells are mainly used for industrial purposes and their construction will require permission from the relevant authorities.
• The service life of such a well is at least 50 years.
• The water here is cleaner and does not require numerous filter stations.

Well pumping, why is it necessary?

The process of pumping a well, during which it is cleaned, must be performed immediately after drilling.

This is due to the fact that:

• Almost always, the first water coming out of the pipe is cloudy, unsuitable for drinking and requires purification.
• If no measures are taken, it will remain dirty, and over time it will completely silt up and stop working.
• The siltation process never stops due to the fact that not only sand and pebbles are contained in the aquifer, but also a large number of tiny particles that the filter cannot catch.
• They pass easily through gravel and mesh filters, and then settle to the bottom of the device. As its depth decreases, productivity decreases greatly.

• from clay is performed immediately after drilling. At first the water flows cloudy, but gradually it brightens, is washed and reaches crystal purity.
• The time period for pumping the device may vary. If it is shallow, it may take 12 hours. At sandy soil, the duration of the operation can take several weeks, and deep ones sometimes take months to clear, which is especially typical for limestone or clay soil.
• It is very difficult to pump out a well on clay. When drilling and pressure cleaning such a structure, a clay solution is formed. It seeps deep into aquifers, and it is very difficult to wash it out and will take a lot of time. In this case, you will simply need to pump out more than 500 cubic meters of water, which increases the duration of the process. The more water is pumped out, the more clay, sand and other small particles are removed. Coarse sand that did not pass through the filter settles at the bottom and creates an additional filter layer, as can be seen in the photo.

Tip: It is necessary to rock the well until the unit supplies clean water from it.

Why does water with clay come from an old well?

From an old well that was working properly, water with clay can come out for two reasons:

• The casing string depressurized and clay began to flow into the well from the waterproof layer.
• After the filter broke through, all the turbidity that had previously been retained by it began to go inside.

In both cases it is necessary to carry out major repairs:

• Pull the drill string out of the ground and fix the leak.
• The filter can be repaired.

Proper well pumping

The instructions indicating how to pump a well on clay contain the following:

• She rocks equipment, the price of which is not high. It can be inexpensively produced domestically. Such a unit is less sensitive to fine sand, but only one pump is not always enough for high-quality cleaning wells and you have to purchase additional equipment.

• The unit must be installed correctly. To do this, it is suspended in such a way that it does not reach the bottom of the well by about 50 centimeters. This is where the gravel filter level is most often located. In this case, the silt that has not settled at the bottom is captured and then brought out.

Tip: You can increase the life of the pump by periodically “flushing” it, pumping a certain volume of clean water through the device.

• Before flushing the well from clay, it is necessary to ensure that dirty water is removed as far as possible from the well to avoid its re-entry. Otherwise, the cleaning process will be endless.

• The pump must be lowered into the well using a thin, strong cable. Only a strong cable will withstand lifting the pump if it suddenly gets stuck.

Well pumping methods

Cleaning a clogged well can be done in several ways:

• Cleaning a well from clay with a pipe.
• Using a vibration pump with a nozzle.
• The process is performed simultaneously by two pumps. Usually it is deep and rotary.

Such methods can be used individually or alternately, depending on the depth of the shaft and the degree of clogging.

Cleaning a well with a bailer or pipe

Before clearing clay from water from a well using a bailer, you need to:

• Remove and empty the shaft completely of foreign objects.
• Fix the bailer on a rope or a fairly strong metal cable and smoothly lower it to the bottom.
• After reaching the bottom, the bailer rises 50 centimeters and then drops sharply under its own weight.
• From a sharp blow to the bottom, the clay begins to move, and free space filled with its particles.
• From a sharp fall, the intake channel opens a metal ball, and water and clay go inside the bailer.
• When rising, the channel closes the ball, and dirty water is retained in the cylinder.
• Such movements must be repeated 2-3 times, then the cylinder slowly rises to the surface.

Each such procedure raises from 250 to 500 grams of clay to the top. This cleaning process is lengthy, but in practice it turns out to be quite effective.

Well cleaning with a vibration pump

The simplest and quick option cleaning - use a vibration pump. It is used in all types of structures, especially in mines where the receiver is narrowed and cleaning with a deep unit is impossible.

Advice: Before you can clear clay from water from a well using this method, you need to purchase a pump that has a protruding water intake located in the lower part of the body.

• A durable rubber or durite hose is put on the water intake and securely fastened with metal brackets.
• The length of the hose depends on the size of the narrowed section.
• The hose must have sufficient rigidity so that it does not bend when it hits the ground.
• The pump lowers to the bottom of the shaft, then rises 5-10 centimeters and turns on.
• The hose collects and pushes the sludge to the surface, but with such a large load and clogged valves, the pump will quickly break down. Therefore, it is recommended to periodically remove it from the shaft for washing with clean water.

Cleaning using two pumps

The method is long-lasting, but the person may not participate in the process.

Before you clean a well from clay using this method, you need to prepare in advance:

• Capacity for liquids up to 300 liters.
• Centrifugal pump for pumping water.

Cleaning with a deep-well pump

This method is as follows:

• The container will supply water under pressure through a hose to the bottom of the well, eroding the clay deposit.
• Pumping water back into the container with eroded clay will deep well pump. This creates a closed flushing system.

Advice: It is better to choose pumps with approximately the same performance.

• The deep pump is raised from the bottom of the well by 15 centimeters.
• A weight is tied to the end of the injection hose immersed in water or a metal tube is put on to prevent the end from twisting and direct it clearly to the bottom of the shaft.
• It is better to put a filter on the suction hose of a centrifugal pump so that small stones or sand do not accidentally get into the pump.

How to use bentonite clay for drilling wells, you can see it in the video. This article describes the most common methods for cleaning wells from clay.

What to do if the well does not pump?

So:

• If the water source is not pumped, then certain mistakes were probably made in its construction.
• Maybe the depth of the well is much greater than in the calculations.
• There is also reason to believe that the pumping equipment for pumping was chosen incorrectly.
• There is an option that there is simply not enough water at this depth.
• For this reason, it is worth continuing drilling to a more aquiferous layer in the area.
• It may be that sand is constantly present in the source. There is water, but it is dirty.
• In this case, you should pay attention to the pump and filter.
• Pumping won't help.
• Such a source can be pumped for several years.
• This is due to the fact that there is sand next to the aquifer, and its layer in the soil was affected by drilling.

To avoid problems with the construction of a water source on the site and in its further operation, you should contact special companies that will provide professional well drilling services and give guarantees for their work.

When it appears near the house water well, from which you can extract the amount of water needed for drinking and household needs - this is a reason for joy, because long, complex and expensive drilling work ended in success. Immediately after drilling and casing is completed, the flow coming to the surface is more like liquid mud than clean and tasty water. There is no need to worry about this: pumping the well with water will solve this problem in a period of several hours to several days.

How long should a well be pumped after drilling, and why should it be done?

Soil and debris particles contained in aquifers form a suspension that must be pumped. This is normal for newly drilled or rarely used wells, however, such dirty water is not suitable for any purpose: the structure will have to be washed.

The time that such work will take is influenced by several circumstances:

• how deep is the well;
• through what layers of soil it passed and into what aquifer it descends (sandy, artesian);
• professionalism of drillers and compliance with work technology;
• pump power.

It is difficult to say how much time will have to be spent on washing. On average, pumping a well after drilling takes 1 day for a sand well and several days/weeks for an artesian well (depending on the depth).

How to choose equipment?

The main tool that site owners will need is a pump for pumping the well. It is also necessary to prepare a place for the discharge of extracted water.
An expensive pump, which was purchased for uninterrupted supply of purified drinking water, is not suitable for pumping: solid particles will clog it in a matter of hours. The best option- buy budget submersible device Russian production With centrifugal principle work. It is undesirable to choose pump models with a snail-shaped impeller or order vibration pumps: the snails instantly become clogged, and vibration violates the integrity of the casing.

The pump must have a power cable of sufficient length to reach the well. In addition, it will often have to be taken out and washed to remove stuck sand, so the cable on which the device will be lowered into the shaft must be strong.

How to pump a well after drilling?

Cleaning a water well is done as follows:

1. The submersible pump is tied to a cable and lowered into the casing. Lower it until the device is 50-60 cm from the bottom. It is impossible to put the pump at the very top: it can be deeply sucked into the silt, and the well will be unusable.
2. Power is supplied to the pump and the process begins.
3. From time to time the device is turned off and pulled to the surface for cleaning. It is better to free it from sand in a barrel or deep bucket of water.
4. Once ready to continue operating, the pump is lowered back into the shaft and water continues to be extracted.
5. Flushing and cleaning the pump lasts until the flow is stable and transparent.

How long does it take to pump a well after drilling, and what to do if the process takes longer?

From the deep artesian wells Water mixed with silt or clay can be pumped out for months. When pumping work lasts and lasts, but there is no result, it is worth paying attention to whether the following mistakes are being made:

1. The submersible pump hangs very high from the bottom, and the water that rises from the very bottom of the shaft is simply not pumped.
2. The submersible pump is almost buried in silt or sand because it is lowered too low. In this case, the device will simply burn out or completely sink into the bottom layers of the soil, and the well will not be able to be used.
3. The pumped water is discharged too close to the mine mouth, causing it to flow back into the well and contaminate it.

Before pumping a well after drilling, it is important to find out its exact depth and check yourself or invited specialists on the three points listed above.

How to deal with siltation?

At the bottom of a rarely used well, silt and sand accumulate, clogging pumping equipment and reducing flow rate. This problem can be resolved using fire truck. The hose is connected to the mouth of the shaft, and water under pressure is directed down the pipe. The jet breaks up dirt and further process Flushing away sludge is easier. The method is not suitable for flushing immediately after completion of drilling work.

Shallow wells can be cleared of silt manually using steel bailers, which must be tied to cables and thrown to the bottom so that silt and dirt are drawn out.
Also popular is the option of washing sludge in an already functioning well using motor pumps. These are expensive units that quickly break down and wash away contaminants from the mine.

At the end drilling work It is recommended to use pumping equipment for flushing.